A modified reference to Liu kang's bicycle kick from mortal combat. A sexual bicycle kick is when a female(most commonly but can be reversible with both sexes) is riding the dick when the male is flat on their back and the female does a bicycle kick and gets that dick up in some more

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.